earth

On August 23, 1966, the space probe Lunar Orbiter 1 sent the very first images of the earth rising above the moon‘s surface back to earth. Lunar Orbiter 1 was part of the Lunar Orbiter program started in the 1960’s in preparation to the Apollo moon landing. The project consisted of five unmanned spacecrafts, equally built to take pictures of the moon. The purpose was to find a safe landing place for…

On September 3, 1874, Norwegian mathematician and geophysicist Carl Størmer was born. Carl Størmer is known both for his work in number theory and for studying the movement of charged particles in the magnetosphere and the formation of aurorae. He also contributed both important photographic observations and mathematical data to the understanding of the polar aurora, of stratospheric and mesospheric clouds, and of the structure of the ionosphere. The discovery of the Van Allen…

On August 20, 1831, Austrian geologist Eduard Suess was born. Suess was an expert on the geography of the Alps and helped lay the basis for paleogeography and tectonics, i.e. the study of the architecture and evolution of the Earth‘s outer rocky shell. He is responsible for hypothesising two major former geographical features, the supercontinent Gondwana (proposed in 1861) and the Tethys Ocean. Eduard Suess was born in London into the large family…

On March 11, 1960, NASA space probe Pioneer 5 was launched from Cape Canaveral. Pioneer 5 as part of the NASA Pioneer program was used to investigate interplanetary space between the orbits of Earth and Venus. As this, it was in one of the first in-depth attempts to study the solar system. Among other accomplishments, the probe confirmed the existence of interplanetary magnetic fields. The NASA Pioneer Program Pioneer 5 was part…

On October 14, 1788, Irish astronomer, geophysicist, ornithologist,explorer, soldier and the 30th President of the Royal Society Sir Edward Sabine was born. His aim was to study the shape of the Earth and its magnetic field. He led the effort to establish a system of magnetic observatories in various parts of British territory all over the globe, and much of his life was devoted to their direction, and to analyzing their observations.…

On March 17, 1958, Vanguard 1, the fourth artificial Earth orbital satellite was launched, which was the first solar-powered satellite. Although communication with it was lost in 1964, it remains the oldest manmade satellite still in orbit. It was designed to test the launch capabilities of a three-stage launch vehicle as a part of Project Vanguard, and the effects of the environment on a satellite and its systems in Earth orbit. It…